[Bug 60510] New: AMD Mobility Radeon HD4650 Screen Corruption with DPM

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=60510

            Bug ID: 60510
           Summary: AMD Mobility Radeon HD4650 Screen Corruption with DPM
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.10.0-drm-next-20130705
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: yjwong92 at gmail.com
        Regression: No

I'm testing out the new DPM patches on drm-next-3.11.

When there is heavy screen updates (i.e. dragging windows around), screen
corruption appears (see video). DPM otherwise works perfectly; system runs
cooler and UVD also works perfectly fine. 

Corruption does not occur with radeon.dpm off.

There is nothing unusual in the kernel logs.

I can provide more info if requested.

Video link: http://www.youtube.com/watch?v=WaWHBckwPpo&feature=youtu.be

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